Diabetic toes can look unhealthy, often showing thick, yellow nails, redness, swelling, dryness, or cracks, and developing issues like corns, calluses, bunions, or hammer toes, due to nerve damage (neuropathy) and poor circulation affecting sensation and healing. You might see open sores (ulcers), fungal infections between toes, ingrown toenails, or even dark, discolored skin/toes (gangrene) if severe, all signaling reduced blood flow and increased infection risk, requiring daily checks and prompt medical attention.
Risk factors for diabetes
A DPM can examine your feet for diabetes warning signs such as redness, numbness, swelling, scaly skin, inflammation, loss of hair on the toes, and non-healing wounds or sores. If symptoms are found, the DPM will refer you to other physicians, in addition to scheduling you for regular visits.
Poor circulation: If you have diabetes and feet turning black or notice other signs of discoloration in the toenails, it could be due to poor circulation. People with diabetes often have poor circulation due to high blood sugar levels that damage blood vessels, making it difficult for blood to move around the body.
Diabetic nails may look thickened, yellowish, brittle, or have an unusual shape. This is often due to reduced blood flow to the extremities and nerve damage, also known as peripheral neuropathy, which affects the feet.
To avoid hurting your skin, don't use a nail file, nail clipper or scissors on calluses, corns or warts. Don't use chemical wart removers. See your provider or foot specialist (podiatrist) to remove any of these issues. Cut your toenails carefully.
According to its proponents, you use the pinch method by holding the thumb and index finger of one hand just above the wrist of the other hand and then exerting a little bit of pressure on the wrist. Doing this will supposedly cause the release of insulin and break down glucose.
Wear socks without seams. Avoid tight-fitting socks and garters. Wear socks in bed if your feet are cold at night.
Aim for at least eight cups of water per day and try to drink a glass of water first thing in the morning.
What to look for in diabetic toenails. The first toenail change you'll notice in diabetic patients is likely to be discoloration. Most have some yellowing of the nails, though the shade and involvement can vary. Discoloring may start at the distal edge (tip) and run all the way to the root of the nail bed.
Warning Signs and Symptoms
Prediabetes Symptoms
“Some people with prediabetes may already have nerve damage, which can cause tingling or numbness in the feet and hands,” she notes. If you are at risk for prediabetes, your doctor may test your blood for sugar levels, or a blood sugar test might be part of your regular check-up.
Big toe problems are common among people with diabetes. The plantar surface of the big toe briefly takes the weight of the whole body during walking or running, and is a common site for ulcers. People with big toe deformities like hallux valgus are more likely to develop ulcers. Hallux valgus is common.
Charcot's foot may start with redness, warmth, and swelling. Later, bones in your feet and toes can shift or break, which can cause your feet to have an odd shape, such as a “rocker bottom.” Charcot's foot can cause your feet to have an odd shape, such as a “rocker bottom.”
Stage 1: Pre-ulcerative lesions
At this initial stage, the skin is still intact, but there are warning signs such as calluses, blisters, or other pre-ulcerative lesions, often over bony areas. Due to diabetic neuropathy, you might not feel any pain, which is why daily foot inspection is essential.
Prediabetes and Nerve Damage
Prolonged high blood sugar levels, even those in the prediabetes range, can damage your nerves. This diabetic neuropathy can lead to numbness, tingling, burning or pain in the extremities such as the feet, toes and hands.
5 tips to reduce or reverse diabetes
Early signs of diabetes in the feet often involve nerve damage (neuropathy) or poor circulation, showing up as tingling, numbness, burning, or pain, especially at night, and slow-healing cuts or blisters, even minor ones, because high blood sugar damages nerves and vessels, leading to reduced sensation and impaired healing. Other indicators include dry, cracked skin, color/temperature changes, fungal infections (between toes, nails), and less hair growth on toes and feet, all signaling nerve issues or reduced blood flow, so regular foot checks are vital.
To manage diabetes, avoid sugary drinks, refined carbs (white bread, pasta, rice), processed foods, sweets (candy, cakes), unhealthy fats (fried foods, trans fats, high-fat dairy), and limit red/processed meats, while focusing on fiber-rich, whole foods. Key is to control blood sugar spikes by reducing added sugars, sodium, unhealthy fats, and simple carbs.
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10 Breakfasts to Help with Glycemic Control
Drinking water is an excellent way to stay hydrated without consuming sugar. Green tea, cow's milk, and fermented milk (kefir) could also help you manage your blood sugar responses. Coffee also contains compounds that may help regulate blood sugar, but confirming this requires more research.
Bedtime snacks for people with diabetes
By eating a small snack that is full of protein and healthy fats (and low in carbohydrates), your body may be better able to avoid an overnight high. If you take insulin, be sure to cover the carbohydrates in your snack, even if it only requires a small dose of insulin.
3 Things You Should Never Do to Your Feet if You Are Diabetic
If you have diabetes, remember that not all socks are created equal. Try to choose socks that: Are white or light-colored to make it easy to spot any bleeding or drainage, for example, if you have a cut or an ingrown toenail. Fit well and aren't too tight.